Senior Stephany LaRosa had a pair of doubles and a triple on Thursday, driving in three.
Freshman Johanna Grauer tossed 5 2/3 innings of relief, striking out three and giving up two hits.
For the second straight day, the Bruins rallied from an early hole to post their 15th straight win.
Delaney Spaulding drove in four, getting the Bruin offense started with a three-run homer.
The ninth-ranked Bruins carry a 13-game winning streak into their next series at #17 Washington.